Littelfuse LA100P25-1 - Littelfuse's LA100P semiconductor protection fuses are rated 1000V, extending the range of protection for UPS systems, AC and DC drives, reduced voltage motor starters and similar applications where lower l2t and superior reliability are needed. With ratings from 15-1000 amperes, a wide range of high voltage applications can be served. Features: Low l2t minimizes damage to protected components on short circuit. Controlled arc voltage reduces stress to circuit components during fuse clearing. Applications: Protection of UPS systems, AC/DC drives, reduced voltage motor starters and other 1000V or less semiconductor devices.
Littelfuse

LA100P25-1

Alternate Item Number: LA100P251

UPC: 079458151633

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Overview

The Littelfuse LA100P25-1 semiconductor protection fuse is a critical component designed for robust overcurrent protection in high-voltage industrial applications. Engineered by Littelfuse, a recognized leader in circuit protection solutions, this fuse offers superior reliability and performance, safeguarding sensitive semiconductor devices from damaging short circuits and overloads. Its 1000V rating significantly extends the protective capabilities for a wide array of demanding systems. This fuse is specifically tailored for applications where minimizing damage to protected components is paramount. The LA100P25-1 features a low l²t (let-through energy) characteristic. This means that during a fault condition, the fuse clears the circuit extremely rapidly, limiting the amount of energy that can reach and potentially destroy downstream semiconductor devices like IGBTs, SCRs, and diodes. This rapid response is crucial for preventing catastrophic failures and reducing costly downtime in critical industrial infrastructure. Furthermore, the Littelfuse LA100P25-1 incorporates controlled arc voltage technology. When the fuse element melts and the circuit is interrupted, an arc is formed. By controlling the voltage of this arc, the fuse minimizes stress on other circuit components, such as busbars and insulators, during the clearing event. This feature contributes to the overall longevity and integrity of the electrical system. The versatility of the LA100P25-1 is evident in its broad application range. It is an ideal choice for protecting: * **Uninterruptible Power Supply (UPS) Systems:** Ensuring continuous power delivery by protecting the critical power electronics within UPS units. * **AC and DC Drives:** Safeguarding the motor control components in variable frequency drives (VFDs) and DC motor controllers. * **Reduced Voltage Motor Starters:** Providing essential protection for the power semiconductors used in soft starters and other reduced voltage starting equipment. * **Other 1000V or Less Semiconductor Devices:** Applicable to a wide range of industrial equipment utilizing high-voltage power electronics. With current ratings available from 15 to 1000 amperes, the LA100P25-1 series allows engineers to select the precise protection level required for their specific application. This extensive range ensures that high-voltage systems of varying power demands can be effectively secured. When selecting a semiconductor protection fuse, professionals prioritize factors such as voltage rating, current rating, interrupting rating, and the crucial l²t value. The Littelfuse LA100P25-1 excels in these areas, offering a dependable solution for engineers and maintenance personnel. Trust in Littelfuse's commitment to quality and innovation to protect your valuable industrial equipment. The LA100P25-1 is more than just a fuse; it's a vital safeguard for the operational continuity and efficiency of your most critical systems.
  • 1000V AC/DC voltage rating for high-voltage applications.
  • Low l²t (let-through energy) minimizes damage to protected semiconductor devices.
  • Controlled arc voltage reduces stress on circuit components during fuse clearing.
  • Ideal for UPS systems, AC/DC drives, and reduced voltage motor starters.
  • Available in a wide current rating range from 15A to 1000A to suit diverse needs.

Specifications

Application
Protection of Semiconductors
Brand Name
Littelfuse
Current Rating
25 A
Current Rating
15-1000A
Series
LA100P
Special Features
Very-Fast Acting
Standard
UL Recognized
Sub Brand
LA Series
Type
Semiconductor Fuse
Voltage Rating
1000 V
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Fuse Block 600VAC 600VDC Class CC 30A 1/4in Quick Connect / Solder 90 angle screw Knob Panel Mount
Fuse Holder Modulostar® Size 10x38 IEC 690VAC 690VDC 3-Pole IP20

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9F61 Size B Clips 1.6in

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9F61 Size B Clips 1.6in
POWR-JAW clamps improve the contact between fuse and clip. The unnecessary heat from poor contact due to the loss of spring force in the clips can cause nuisance fuse opening and premature aging of surrounding components. High temperature phenolic resin knob designed for the most severe environments 7 sizes to provide effective coverage. Simple design makes installation easy.

LCC5

POWR-JAW clamps improve the contact between fuse and clip. The unnecessary heat from poor contact due to the loss of spring force in the clips can cause nuisance fuse opening and premature aging of surrounding components. High temperature phenolic resin knob designed for the most severe environments 7 sizes to provide effective coverage. Simple design makes installation easy.

Frequently Asked Questions about Littelfuse

What certifications and standards do Littelfuse products comply with?

Littelfuse products are certified to multiple international standards, including UL (Underwriters Laboratories), CSA (Canadian Standards Association), CCC (China Compulsory Certification), and EAC (Eurasian Conformity). Customers can verify specific product certifications by consulting individual product datasheets on Littelfuse.com, which provide comprehensive details about standards compliance for each component.

What industries and applications are Littelfuse products used for?

Littelfuse products are critical for electrical protection and safety across multiple industrial sectors, including manufacturing, automation, power distribution, and electrical control systems. Their comprehensive product portfolio serves industries that require robust electrical protection, including motor and pump applications, solar installations, programmable logic controllers (PLCs), electrical switch panels, and critical infrastructure environments. Key product lines protect against overcurrent, voltage transients, ground faults, and temperature-related electrical risks, ensuring equipment safety and operational reliability.

What technical support does Littelfuse offer?

Littelfuse offers comprehensive technical support through multiple channels. Their Technical Hotline (800-TEC-FUSE) provides direct access to engineers who can help identify issues and recommend solutions. Additionally, Littelfuse offers extensive online Technical Resources at Littelfuse.com, including datasheets, product manuals, whitepapers, application guides, and online design tools. Their experienced product and application engineers also provide step-by-step support from design to installation.

What are the main product lines offered by Littelfuse?

Littelfuse offers comprehensive industrial protection and control product lines, including fuses, fuse holders, protection relays, temperature sensors, and electrical safety components. Their key product categories span surge protective devices, custom OEM products, electrical switch panels, medium voltage fuses, ground-fault protection relays, motor and pump protection devices, and temperature sensors. These products are designed to minimize electrical safety hazards, limit equipment damage, improve productivity, and safeguard personnel from electrical faults.

What are the key features of Littelfuse products?

Littelfuse products feature exceptional circuit protection technologies with key characteristics including UL/IEC safety standard compliance, low internal resistance, and advanced protective capabilities across multiple product lines. Their components provide critical protection for industrial systems, offering features like overcurrent protection, voltage transient suppression, and resettable protection devices with ultra-low resistance and compact designs. Key product lines include fuses, metal oxide varistors (MOVs), TVS diodes, PolySwitch devices, and specialized electronic protection components that enhance system reliability and safety.

What environmental ratings do Littelfuse products have?

Littelfuse products feature comprehensive environmental ratings, including NEMA Type 1, 2, 3, 3R, 4/4X, 12, and 13 certifications, as well as IP65 protection. These ratings ensure superior protection in diverse industrial environments, with an operating temperature range of -40°F to +131°F (-40°C to +55°C). Many products also include UV-stabilized materials and neoprene gaskets for enhanced durability in outdoor and challenging conditions.

What accessories are available for Littelfuse products?

Littelfuse offers several key accessories across their product lines, including fuse holders, voltage monitoring modules, and terminal connectors. Specific accessories include the LPSM003ZXID (indicating) and LPSM003Z (non-indicating) POWR-SAFE Dead Front fuse holders for Class CC and Midget-Style fuses, the VRM6048 voltage monitor accessory module, and female quick connect terminals (P1015 series) in various wire gauge sizes. These accessories are designed to enhance protection, monitoring, and connectivity for Littelfuse electrical components.

What is Littelfuse's warranty policy?

Littelfuse provides comprehensive warranty details on their official website at www.littelfuse.com/warranty. Customers should visit this page to review the specific warranty terms and conditions for their specific product lines. For direct warranty support or questions, customers can contact Littelfuse Technical Support at 1-800-TEC-FUSE or email [email protected].

What communication protocols do Littelfuse products support?

Littelfuse supports a comprehensive range of industrial communication protocols, including PROFIBUS, PROFINET, EtherNet/IP, DeviceNet, Modbus RTU, and CANopen. Our products provide flexible connectivity solutions across multiple industrial automation platforms, enabling seamless integration with various control systems and network architectures.

How are Littelfuse products typically installed?

Littelfuse products are typically installed using specialized mounting hardware like fuse holders, blocks, and panels designed for specific industrial applications. The POWR-SAFE Dead Front holders, for example, provide optimum protection for Class CC and Midget-Style fuses, supporting installations up to 600 VAC/DC. Installation often involves using precision terminals with strain relief, such as 0.25 in. female quick connect terminals, to ensure secure and safe electrical connections in industrial control systems.